{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100910",
    "entityType": "User",
    "nonce": "0x5c519a239e6dbc7cd95e0664da0bfede11c2ca5fabdf89ebe8ac62f36a368ae0",
    "signature": "0x5eacd56ef2c1b18c1108f8d247579d12e13a731dcee0600d0461abaa2eacc2b7220ea501e5aa151ccb646a8ab8031104379ef6c05b66e2a7e9b96f0941c1c4831b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}